43349387 has 2 divisors, whose sum is σ = 43349388. Its totient is φ = 43349386.

The previous prime is 43349381. The next prime is 43349401. The reversal of 43349387 is 78394334.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43349387 - 2¹⁰ = 43348363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43349381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21674693 + 21674694.

It is an arithmetic number, because the mean of its divisors is an integer number (21674694).

Almost surely, 2^43349387 is an apocalyptic number.

43349387 is a deficient number, since it is larger than the sum of its proper divisors (1).

43349387 is an equidigital number, since it uses as much as digits as its factorization.

43349387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 43349387 is about 6584.0251366470. The cubic root of 43349387 is about 351.2861171981.

The spelling of 43349387 in words is "forty-three million, three hundred forty-nine thousand, three hundred eighty-seven".